EGRD&trade; Bluetooth CSR 4.0 Sweatpoof Wireless Stereo Sport Headphones with NFC Function, Lightweight in-ear Headsets Earphones Earbuds with Build-in Microphone Aptx CVC6.0 Noise-isolating for iPhone 6/6plus/5S/5C/4S/4, iPad, iPod, Samsung Galaxy, Samsung Note, Sony, LG , most other smart-phones and Bluetooth Devices. (Black) Adopt the most advanced bluetooth CVC6.0 intelligent noise reduction technology, combine with HD microphone. Provide super clear call quality even through in a noisy environment. Bluetooth CSR 4.0 chip,support the profiles with A2DP ,Aptx, AVRCP at the same time. Which makes you could enjoy a HD stereo music, no matter the high pitch or bass, it provide the perfect effect. Ergonomically design. Sweatproof, Wireless, Portable, Compact and Behind-the head designed extremely ideal for outdoor sports. Never worried about it will out of your ear no matter what activities you conduct New added NFC function, makes pair more quickly and easily. Enjoy the high-quality intelligent life. Long music time up to 6 hours, talk time up to 7 hours and standby time up to 120 hours.